High-performance readout and recording by a combination aperture

Shu Guo Tang, Tom D. Milster, J. Kevin Erwin, Warren L. Bletscher

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


A solid immersion lens combined with a conical dielectric tip exhibits good resolution and efficiency in reading and recording data marks on optical storage media. We demonstrate a combination aperture that produces ∼200-nm full-width 1/e2 spot size and achieves 50% optical efficiency in an edge-scan experiment. A comparison of recording with the combination aperture, with an unmodified solid immersion lens, and with a far-field system is made.

Original languageEnglish (US)
Pages (from-to)1987-1989
Number of pages3
JournalOptics letters
Issue number24
StatePublished - Dec 15 2001

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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